Thanks for the replies all!
Speaking from an alpha mind:
why I would not go for the nikon: 3-point af system, only autofocus with lenses who have it in their lens, "only" 6.1 mgp, no compact flash.
why I would go for the sony: Super Steady shot, 10 mgp, autofocus build in the body, 9-point af system
Sorry for dumb questions but what is 3 vs 9-point AF system mean?
The number of points on an AF system simply means how many AF Areas you, or the camera, have to choose from when focusing.
So a 3-point AF system will have 3 Auto Focus points engraved or projected in the Viewfinder, which will allow you to tell the camera, or have the camera focus on any of the 3 points.
The 9 point or any other number point is essentially the same thing. There are just more AF points scattered in the viewfinder/camera..
All in all, the number of AF points shouldn't be the determining factor for your future purchase.